求大量初中数学计算题,整式分式混合运算,二次根式计算,统统都要(要带答案的)

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热心网友 时间:2023-10-27 23:52

①5√8-2√32+√50
=5*3√2-2*4√2+5√2
=√2(15-8+5)
=12√2
②√6-√3/2-√2/3
=√6-√6/2-√6/3
=√6/6
③(√45+√27)-(√4/3+√125)
=(3√5+3√3)-(2√3/3+5√5)
=-2√5+7√5/3
④(√4a-√50b)-2(√b/2+√9a)
=(2√a-5√2b)-2(√2b/2+3√a)
=-4√a-6√2b
⑤√4x*(√3x/2-√x/6)
=2√x(√6x/2-√6x/6)
=2√x*(√6x/3)
=2/3*|x|*√6
⑥(x√y-y√x)÷√xy
=x√y÷√xy-y√x÷√xy
=√x-√y
⑦(3√7+2√3)(2√3-3√7)
=(2√3)^2-(3√7)^2
=12-63
=-51
⑧(√32-3√3)(4√2+√27)
=(4√2-3√3)(4√2+3√3)
=(4√2)^2-(3√3)^2
=32-27
=5
⑨(3√6-√4)?
=(3√6)^2-2*3√6*√4+(√4)^2
=54-12√6+4
=58-12√6
⑩(1+√2-√3)(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1-(√2-√3)^2
=1-(2+3+2√6)
=-4-2√6

(1)5√12×√18
=5*2√3*3√2
=30√6;

(2)-6√45×(-4√48)
=6*3√5*4*4√3
=288√15;

(3)√(12a)×√(3a) /4
=√(36a^2)/4
=6a/4
=3a/2.

参考资料:http://zhidao.baidu.com/question/113301821.html

热心网友 时间:2023-10-27 23:52

好难啊,出点简单的不行吗

热心网友 时间:2023-10-27 23:53

你不至于吧,没必要为难大家啊

热心网友 时间:2023-10-27 23:53

就限100字,怎么弄呀。

热心网友 时间:2023-10-27 23:54

这孩子问题好重……

热心网友 时间:2023-10-27 23:52

①5√8-2√32+√50
=5*3√2-2*4√2+5√2
=√2(15-8+5)
=12√2
②√6-√3/2-√2/3
=√6-√6/2-√6/3
=√6/6
③(√45+√27)-(√4/3+√125)
=(3√5+3√3)-(2√3/3+5√5)
=-2√5+7√5/3
④(√4a-√50b)-2(√b/2+√9a)
=(2√a-5√2b)-2(√2b/2+3√a)
=-4√a-6√2b
⑤√4x*(√3x/2-√x/6)
=2√x(√6x/2-√6x/6)
=2√x*(√6x/3)
=2/3*|x|*√6
⑥(x√y-y√x)÷√xy
=x√y÷√xy-y√x÷√xy
=√x-√y
⑦(3√7+2√3)(2√3-3√7)
=(2√3)^2-(3√7)^2
=12-63
=-51
⑧(√32-3√3)(4√2+√27)
=(4√2-3√3)(4√2+3√3)
=(4√2)^2-(3√3)^2
=32-27
=5
⑨(3√6-√4)?
=(3√6)^2-2*3√6*√4+(√4)^2
=54-12√6+4
=58-12√6
⑩(1+√2-√3)(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1-(√2-√3)^2
=1-(2+3+2√6)
=-4-2√6

(1)5√12×√18
=5*2√3*3√2
=30√6;

(2)-6√45×(-4√48)
=6*3√5*4*4√3
=288√15;

(3)√(12a)×√(3a) /4
=√(36a^2)/4
=6a/4
=3a/2.

参考资料:http://zhidao.baidu.com/question/113301821.html

热心网友 时间:2023-10-27 23:52

好难啊,出点简单的不行吗

热心网友 时间:2023-10-27 23:53

你不至于吧,没必要为难大家啊

热心网友 时间:2023-10-27 23:53

就限100字,怎么弄呀。

热心网友 时间:2023-10-27 23:52

①5√8-2√32+√50
=5*3√2-2*4√2+5√2
=√2(15-8+5)
=12√2
②√6-√3/2-√2/3
=√6-√6/2-√6/3
=√6/6
③(√45+√27)-(√4/3+√125)
=(3√5+3√3)-(2√3/3+5√5)
=-2√5+7√5/3
④(√4a-√50b)-2(√b/2+√9a)
=(2√a-5√2b)-2(√2b/2+3√a)
=-4√a-6√2b
⑤√4x*(√3x/2-√x/6)
=2√x(√6x/2-√6x/6)
=2√x*(√6x/3)
=2/3*|x|*√6
⑥(x√y-y√x)÷√xy
=x√y÷√xy-y√x÷√xy
=√x-√y
⑦(3√7+2√3)(2√3-3√7)
=(2√3)^2-(3√7)^2
=12-63
=-51
⑧(√32-3√3)(4√2+√27)
=(4√2-3√3)(4√2+3√3)
=(4√2)^2-(3√3)^2
=32-27
=5
⑨(3√6-√4)?
=(3√6)^2-2*3√6*√4+(√4)^2
=54-12√6+4
=58-12√6
⑩(1+√2-√3)(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1-(√2-√3)^2
=1-(2+3+2√6)
=-4-2√6

(1)5√12×√18
=5*2√3*3√2
=30√6;

(2)-6√45×(-4√48)
=6*3√5*4*4√3
=288√15;

(3)√(12a)×√(3a) /4
=√(36a^2)/4
=6a/4
=3a/2.

参考资料:http://zhidao.baidu.com/question/113301821.html

热心网友 时间:2023-10-27 23:54

这孩子问题好重……

热心网友 时间:2023-10-27 23:52

好难啊,出点简单的不行吗

热心网友 时间:2023-10-27 23:53

你不至于吧,没必要为难大家啊

热心网友 时间:2023-10-27 23:52

①5√8-2√32+√50
=5*3√2-2*4√2+5√2
=√2(15-8+5)
=12√2
②√6-√3/2-√2/3
=√6-√6/2-√6/3
=√6/6
③(√45+√27)-(√4/3+√125)
=(3√5+3√3)-(2√3/3+5√5)
=-2√5+7√5/3
④(√4a-√50b)-2(√b/2+√9a)
=(2√a-5√2b)-2(√2b/2+3√a)
=-4√a-6√2b
⑤√4x*(√3x/2-√x/6)
=2√x(√6x/2-√6x/6)
=2√x*(√6x/3)
=2/3*|x|*√6
⑥(x√y-y√x)÷√xy
=x√y÷√xy-y√x÷√xy
=√x-√y
⑦(3√7+2√3)(2√3-3√7)
=(2√3)^2-(3√7)^2
=12-63
=-51
⑧(√32-3√3)(4√2+√27)
=(4√2-3√3)(4√2+3√3)
=(4√2)^2-(3√3)^2
=32-27
=5
⑨(3√6-√4)?
=(3√6)^2-2*3√6*√4+(√4)^2
=54-12√6+4
=58-12√6
⑩(1+√2-√3)(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1-(√2-√3)^2
=1-(2+3+2√6)
=-4-2√6

(1)5√12×√18
=5*2√3*3√2
=30√6;

(2)-6√45×(-4√48)
=6*3√5*4*4√3
=288√15;

(3)√(12a)×√(3a) /4
=√(36a^2)/4
=6a/4
=3a/2.

参考资料:http://zhidao.baidu.com/question/113301821.html

热心网友 时间:2023-10-27 23:52

好难啊,出点简单的不行吗

热心网友 时间:2023-10-27 23:53

你不至于吧,没必要为难大家啊

热心网友 时间:2023-10-27 23:53

就限100字,怎么弄呀。

热心网友 时间:2023-10-27 23:54

这孩子问题好重……

热心网友 时间:2023-10-27 23:52

①5√8-2√32+√50
=5*3√2-2*4√2+5√2
=√2(15-8+5)
=12√2
②√6-√3/2-√2/3
=√6-√6/2-√6/3
=√6/6
③(√45+√27)-(√4/3+√125)
=(3√5+3√3)-(2√3/3+5√5)
=-2√5+7√5/3
④(√4a-√50b)-2(√b/2+√9a)
=(2√a-5√2b)-2(√2b/2+3√a)
=-4√a-6√2b
⑤√4x*(√3x/2-√x/6)
=2√x(√6x/2-√6x/6)
=2√x*(√6x/3)
=2/3*|x|*√6
⑥(x√y-y√x)÷√xy
=x√y÷√xy-y√x÷√xy
=√x-√y
⑦(3√7+2√3)(2√3-3√7)
=(2√3)^2-(3√7)^2
=12-63
=-51
⑧(√32-3√3)(4√2+√27)
=(4√2-3√3)(4√2+3√3)
=(4√2)^2-(3√3)^2
=32-27
=5
⑨(3√6-√4)?
=(3√6)^2-2*3√6*√4+(√4)^2
=54-12√6+4
=58-12√6
⑩(1+√2-√3)(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1-(√2-√3)^2
=1-(2+3+2√6)
=-4-2√6

(1)5√12×√18
=5*2√3*3√2
=30√6;

(2)-6√45×(-4√48)
=6*3√5*4*4√3
=288√15;

(3)√(12a)×√(3a) /4
=√(36a^2)/4
=6a/4
=3a/2.

参考资料:http://zhidao.baidu.com/question/113301821.html

热心网友 时间:2023-10-27 23:52

好难啊,出点简单的不行吗

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